Remove unneeded % escape sequence in german translation.

After 0.18 we need to have a proper fix for the original string as well.
Merge pull request #530 from stefanbeller/de

Remove unneeded % escape sequence in german translation.
Temporary fix for '%%' typo in speed bonus

Basically, provide a minimal English-to-English translation to correct it.
Merge pull request #531 from dorkster/bugfixes

Temporary fix for '%%' typo in speed bonus
Lock ACCEPT when respawning
Merge pull request #533 from dorkster/bugfixes

Lock ACCEPT when respawning
Merge branch 'master' of https://github.com/clintbellanger/flare-engine
minicore icons